# Service bulletin TechTalk8106

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10187906
- Published by NHTSA: 2021\-03\-03
- Manufacturer's number: TechTalk8106
- Manufacturer's date: 2021\-02\-04
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

Tech Talk discussion on 2020 Western Star 4800 signal lights dim to start.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187906-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187906-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Lighting

## Vehicles listed

- 2020 WESTERN STAR 4800

## Other bulletins for the same vehicles and component

- [TechTalk7698](/bulletins/10180452.md), 2020-10-01, Service bulletin: EXTERIOR LIGHTING; SERVICE BRAKES, HYDRAULIC. Tech Talk discussion on dim brake lights.

JSON: [/v1/bulletins/10187906](/v1/bulletins/10187906)

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